Mount vernon is located in Faulkner county Arkansas with a geographic area of 1.0 square miles. The total population in Mount vernon is 178 with 52.2% male and 47.8% female. Children under age 5 represent 4.5% of the population, under age 18 equal 22.5% of the population and over age 65 is 12.9% of the population. The median household income is $49,375, per capita income is $18,517. There are a total of 59 housing units with 54.2% owner occupied. Education includes 37.3% of residents that are high school graduates and 16.9% with a bachelor's degree or higher. The average temperature in Mount vernon in the summer is 78 degrees, and in the winter 37 degrees.